I have created stage lighting setup, and a lighting dimmer board with 126 buttons for selecting the channel of specific spotlights (7 buttons each for 18 lights).
I would like each button to glow when it is pushed down (i.e. moved along its z-axis). At first I was thinking of using a driver to change the emission of the material, but that would mean making a separate material for each button!
Is there a way to use geometry nodes to either change the emission of a single object according to its z coordinate?
Or perhaps selecting a different material slot may be more straightforward. Could I create a different material for button up and button down, and select the material slot according to button location?
I am new to geometry nodes so have very little idea of the capabilities or use. Any ideas or suggestions about where to educate myself would be most appreciated.